Packing



March 3, 1931. G. JAEGER 1,795,129

PACKING Filed May 16, 1928 Fig.2. 4

3nncntor 2 GEBHARD JAFGER 191/95. lgiww" A/I/O (Ittornegs Patented Mar. 3, 1931 otm STATES PATENT QFFICE GqEBHARD JAEGER, F COLUMBUS, CHIC, ASSIGNOR TO THE JAEG'ER MACHINE COM-- PANY, OF COLUMBUS, OHIO, A GDRPORATIO N OF OHIO PACKING Application filed May 16, 1928. Serial No. 278,266.

This invention relatestopackings for bearings, especially bearings for the agitator shaft of a mixing machine. In such machines there is a constant tendency of the material in the mixing drum to work into the bearings and if the material contains anything of a gritty or corrosive nature, as for example mortar, it injures the parts.

One object of the invention is to provide an improved packing adapted better than those hitherto proposed to resist the tendency of the contents of the drum to enter the bearing. Another object is to provide improved means whereby the packing may be easily examined from time to time and replaced when worn without removing numerous parts. Further objects will appear from the disclosure herein.

The invention is embodied in the example T? herein shown and described, the features of novelty being finally claimed.

In the accompanying drawing- Figure 1 illustrates partly in horizontal section a mortar mixing drum equipped with my improved bearings, the drum being broken out vertically and horizontally.

Fig. 2 is an elevation looking at the right hand end of the drum as positioned in Fig. 1, the drum being peripherally broken off.

Fig. 3 is a sectional view on the line IIIIII Fig. 1.

In the views designates the end fractions of the mixing drum, the ends 11 of which are equipped with perforated trunnions 12 in a packing box 12 The character 13 designates the shaft of the agitator that carries blades (not shown) said shaft extending through the packing box and trunnion as best shown at the right hand side of Fig. 1. In its main details the construction of the bearing and packing is substantially the same at each end of the drum. In such a mixing device the shaft 13 is rotated to effect the mixing of the mortar, the drum being supported by the trunnions to permit the tilting thereof as by means of rack 27 and pinion 28 to discharge the contents thereof when mixed.

The box 12 forms a packing and lubricating chamber, said box being attached to suitable material of the shaft.

said head of the drum by bolts 14. The head of the drum is perforated with a circular opening of the diameter of theshaft andon On the shaft 13 next the disk 15 and within the box is a packing member consisting of a volutely coiled strip of fibrous material 16 preferably adapted to absorb lubricant. Beyond the packing 16 and loose on the shaft is a compression'device consisting of a presser head 17 having that sidenext the packing smooth and having fixed to or castwith it at its other side a pair of loops like that shown at 18, the space between the loopand the presser head being narrowed at one end and widened at the other. Said other side of the loop is also provided with pins like that shown at 19. Cooperating with the presser head is a base plate or head 20 formed with tubular posts 21 into which extend the pins 19 and on said tubular posts are coil springs 22 bearing against the presser head. Fixed in the shaft 13 are laterally extending pins 23 projectinginto the openings formed by the loops. The presser head is formed with lugs 24, 24, between which a toola screw driver for example-can be inserted to turn the whole compression device so that the pins 16'and therefore make atight joint to prevent the contents of the drum from working into the packing box and bearing.

WVhen by long use the packing becomes so thin as to be no longer serviceable the compression device is turned with a tool as before described but to cause the pins 23, 23, to extend into the narrow space by the loop the 01d packing can be removed and a new one access to the box and bearing. This cover 1s, of course, removed from time to time to examine the condition of the packing and to replace a worn out one. I

The forms of the parts can be changed without departing from the gist of the invention as claimed. I

' What I claim is: v I

1, In combination with a mixing drum, and an agitator shaft extending therethrough, said shaft having a pin therein, apacking case and packing therein around the shaft, a pack- 1ng compression means 1n sald case includlng l ft a presser head, a spring for actuating the same and means .on said presser head cooperating with said pin of the shaft to hold said presser head in a fixed position and when the presser head .is turned on the shaft to release said head to press againstthe packing.

2; In combination with a mixing drum and an agitator shaft extending therethrough, said shaft-having a pin therein, a packing case around the shaft, a packing compression member in said case including a base and a presser head, a spring between the base and the presser head, and means on'said presser head cooperating with the pinof the shaft to hold said presser head in a fixed position and when the presser head .is turned onthe shaft to release said head to press againstthe packing, 1 I V a 3. In combination with a mixing drum and an agitator shaft extending therethrough, said shaft having a pin therein, a packing casegaround the shaft, a packing compression member in said case including a base anda presser head, means for causin the base and head to turn together on the s aft, a spring between the base and the presserhead, and means on said presser head cooperating with the pin of the shaft to hold said presser head in a fixed position and when the presser head is turned on the shaft to release said'head to press againstthe packing. V

4. In combination with'a mixing drum and an agitator shaft extending therethrough, a

packing case around the shaft, a packing compresslon member in sald case lncluding a presser head,a spring to act on said presser head, means on said presser head for holding ing upon a turning of the presser head in respect to the shaft. s

5. In means of the kind described, a shaft having a pin thereon, a packing compression head on said shaft, a spring for pressing said compression head against the packing, a cam on said compression head cooperating with said pin and adapted, when the head is turned in one direction to latch the head in fixedposition in relation to the packing, and, when said head is turned in the opposite direction,

to release it for pressure against the packing,

a closure for said compression head and pack ing, said closure having a lateral opening permitting access to the compression head and packing, andja removable cover for said opening.

I GEBHARD JAEGER.

said head in a fixed position in relation to v the packing and means for releasing said presserhead for pressure against the pack- 7 

